Modernize CS code example

Author: wouterj

contributing/code/standards.rst

@@ -47,30 +47,24 @@ short example containing most features described below::
      */
     class FooBar
     {
-        const SOME_CONST = 42;
+        public const SOME_CONST = 42;
 
-        /**
-         * @var string
-         */
-        private $fooBar;
-
-        private $qux;
+        private string $fooBar;
+        private Qux $qux;
 
         /**
-         * @param string $dummy Some argument description
+         * @param $dummy some argument description
          */
-        public function __construct($dummy, Qux $qux)
+        public function __construct(string $dummy, Qux $qux)
         {
             $this->fooBar = $this->transformText($dummy);
             $this->qux = $qux;
         }
 
         /**
-         * @return string
-         *
          * @deprecated
          */
-        public function someDeprecatedMethod()
+        public function someDeprecatedMethod(): string
         {
             trigger_deprecation('symfony/package-name', '5.1', 'The %s() method is deprecated, use Acme\Baz::someMethod() instead.', __METHOD__);
 
@@ -80,14 +74,11 @@ short example containing most features described below::
         /**
          * Transforms the input given as the first argument.
          *
-         * @param bool|string $dummy   Some argument description
-         * @param array       $options An options collection to be used within the transformation
-         *
-         * @return string|null The transformed input
+         * @param $options an options collection to be used within the transformation
          *
-         * @throws \RuntimeException When an invalid option is provided
+         * @throws \RuntimeException when an invalid option is provided
          */
-        private function transformText($dummy, array $options = [])
+        private function transformText(bool|string $dummy, array $options = []): ?string
         {
             $defaultOptions = [
                 'some_default' => 'values',
@@ -100,16 +91,13 @@ short example containing most features described below::
                 }
             }
 
-            $mergedOptions = array_merge(
-                $defaultOptions,
-                $options
-            );
+            $mergedOptions = array_merge($defaultOptions, $options);
 
             if (true === $dummy) {
                 return 'something';
             }
 
-            if (is_string($dummy)) {
+            if (\is_string($dummy)) {
                 if ('values' === $mergedOptions['some_default']) {
                     return substr($dummy, 0, 5);
                 }
@@ -122,11 +110,8 @@ short example containing most features described below::
 
         /**
          * Performs some basic operations for a given value.
-         *
-         * @param mixed $value     Some value to operate against
-         * @param bool  $theSwitch Some switch to control the method's flow
          */
-        private function performOperations($value = null, $theSwitch = false)
+        private function performOperations(mixed $value = null, bool $theSwitch = false)
         {
             if (!$theSwitch) {
                 return;